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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity. To which group should this impurity belong? - Chemistry

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प्रश्न

A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity. To which group should this impurity belong?

उत्तर

An n-type semiconductor conducts because of the presence of extra electrons. Therefore, a group 14 element can be converted to n-type semiconductor by doping it with a group 15 element.

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Electrical Properties - Conduction of Electricity in Semiconductors
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पाठ 1: The Solid State - Intext Questions [पृष्ठ २९]

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एनसीईआरटी Chemistry [English] Class 12
पाठ 1 The Solid State
Intext Questions | Q 23 | पृष्ठ २९

संबंधित प्रश्‍न

What is a semiconductor


Describe the two main types of semiconductors and contrast their conduction mechanism.


Non-stoichiometric cuprous oxide, Cu2O can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2:1. Can you account for the fact that this substance is a p-type semiconductor?


Classify the following as being either a p-type or an n-type semiconductor:

Ge doped with In


Classify the following as being either a p-type or an n-type semiconductor:

B doped with Si.


Explain the following with suitable examples:

12-16 and 13-15 group compounds.


What type of semiconductor is obtained when 
Ge is doped with In?


 What type of semiconductor is obtained when 
 Si is doped with P? 


Semiconductors have conductivity (in ohm-1 m-1) in the range of ____________.


Electrical conductivity of semiconductors increases with increase in ____________.


Silicon doped with electron-rich impurity forms ______.


Which of the following statements are true about semiconductors?

(i) Silicon doped with electron-rich impurity is a p-type semiconductor.

(ii) Silicon doped with an electron-rich impurity is an n-type semiconductor.

(iii) Delocalised electrons increase the conductivity of doped silicon.

(iv) An electron vacancy increases the conductivity of n-type semiconductor.


Why does the electrical conductivity of semiconductors increase with rise in temperature?


Assertion: Semiconductors are solids with conductivities in the intermediate range from 10–6 – 104 ohm–1m–1.
Reason: Intermediate conductivity in semiconductor is due to partially filled valence band.


Silicon is a/an ______


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